時季は巡る

Recording by Yu Sakai.

Recording identifiers

ISRC
JPPO02303856
CopyrightID (CopyrightChains transaction hash)
0x5fc631b099148c587ebe4a5ca59d268723866666bf40a16fc5ce220417b685a8
Copyright registration time
2026-07-31T02:42:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T03:13:37Z
Bitcoin block
960339
Canonical record hash
sha256:cbabd5aa9c3f96773814dea38d294e0685528c8832f3f1d5290e468169d1b439

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.